I have a web page that is launching two instances of a vendor applet. I am using the separate_jvm=true parameter. Everything works fine in IE8 and Firefox 12. However when I open the page in IE9 it seems to be ignoring the separate_jvm parameter.

Thank you for the trouble shooting information. I think I've got this one figured out now. I have Windows 7 64-bit and I had both the 32 and 64 bit JDKs installed. I uninstalled everything Java then reinstalled the 32-bit JRE and the 64-bit JDK and now the 'separate_jvm' parameter seems to be working. Some signals must have been getting crossed somewhere.